US3958736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web tensioning and steering
Assignee: Fort James Corp
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Filing: 1974-11-06
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Granted: 1976-05-25
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Expires: 1994-11-06
Abstract
Abstract Simultaneously tensioning one side of a web and correcting steering error introduced by said tensioning comprising passing the web partially around a tensioning member, e.g. a roll, and skewing the roll axis relative to a neutral axis, with the end of the roll adjacent the side of the web to be tensioned positioned, relative to the other end of the roll, toward the portion of the web wrapped around the roll and forward in the direction of web movement.
Inventors
- 👤 Robert M. Pounds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:28
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/26; B65H23/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
170 words
The method of tensioning one side of a web as it is moved in a predetermined path and simultaneously correcting steering error caused by said tensioning tending to direct said web transversely away from said path, comprising the steps of: wrapping said web partially around the surface of a tensioning member extending along an axis positioned generally transversely of said web and said predetermined path thereof; positioning said axis of said tensioning member in a skewed position relative to a neutral axis in which said tensioning member would apply equal tension across a perfect web, with one end of said tensioning member, at the side of said web to be tensioned, positioned, relative to the other end of said tensioning member, a first distance toward the portion of said web wrapped around said tensioning member surface and forward a second distance equal to said first distance in the direction of movement of said web in said predetermined path; and moving said web past said tensioning member in said predetermined path.
Claim 2
Independent Claim
170 words
The method of tensioning one side of a web as it is moved in a predetermined path and simultaneously correcting steering error caused by said tensioning tending to direct said web transversely away from said path, comprising the steps of: wrapping said web partially around the surface of a tensioning member extending along an axis positioned generally transversely of said web and said predetermined path thereof; positioning said axis of said tensioning member in a skewed position relative to a neutral axis in which said tensioning member would apply equal tension across a perfect web, with one end of said tensioning member, at the side of said web to be tensioned, positioned, relative to the other end of said tensioning member, a first distance toward the portion of said web wrapped around said tensioning member surface and forward a second distance equal to said first distance in the direction of movement of said web in said predetermined path; and moving said web past said tensioning member in said predetermined path.
Claim 3
Dependent Claim
36 words
The method claimed in claim 1 in which said tensioning member comprises a cylindrical roll and said roll rotates about said tensioning member axis in the direction of movement of said web in said predetermined path.
Claim 4
Dependent Claim
57 words
The method claimed in claim 2 in which said roll is moveable from a position with its axis coincident with said neutral axis to a said skewed position further including the step of moving said roll while said web is moving past said tensioning member to position said axis of said roll in a said skewed position.
Claim 5
Dependent Claim
66 words
The method claimed in claim 3 further including the steps of simultaneously moving said ends of said roll respectively along a first line extending through said neutral axis and intersecting the portion of said web wrapped around said tensioning member surface and along a second line extending through said neutral axis and extending generally in the direction of movement of said web in said predetermined path.
Claim 6
Dependent Claim
20 words
The method claimed in claim 4 in which said first and second lines are at right angles to each other.
Claim 7
Dependent Claim
24 words
The method claimed in claim 5 in which said first line bisects the segment of said roll surface around which said web is wrapped.
Claim 8
Dependent Claim
22 words
The method claimed in claim 6 in which said web is wrapped about a 90° segment of the surface of said roll.
Claim 9
Dependent Claim
48 words
The method claimed in claim 5 in which said one end is moved along said first line in a direction toward said web and said other end is moved along said second line in a direction opposite the direction of movement of said web in said predetermined path.
Claim 10
Dependent Claim
46 words
The method claimed in claim 5 in which said other end is moved along said first line in a direction away from said web and said one end is moved along said second line in the direction of movement of said web in said predetermined path.
Claim 11
Dependent Claim
24 words
The method claimed in claim 8 in which said first line bisects the segment of said roll surface around which said web is wrapped.
Claim 12
Dependent Claim
22 words
The method claimed in claim 10 in which said web is wrapped about a 90° segment of the surface of said roll.
Claim 13
Dependent Claim
24 words
The method claimed in claim 9 in which said first line bisects the segment of said roll surface around which said web is wrapped.
Claim 14
Dependent Claim
22 words
The method claimed in claim 12 in which said web is wrapped about a 90° segment of the surface of said roll.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |